How about going out for a break—________ We’ve been working for three hours

Some kinds of animals can change their colour with _______.

You haven’t been to the West Lake, have you—_____. But I will go there with my parents this summer vacation.

Is your mother _________ English teacher—No, she isn’t. She is _________doctor.

____________ he is, ____________mistakes he will make.— That’s true. That’s why he got a lowmark again.